Shipping Errors 7300  Out of Stock 2700  Construct a Pareto Diagram below to show this data. What area(s) should the focus be on?

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An analysis of customer complaints at a large mail order house revealed the following data:
Billing Errors 4500
Picking Errors 9800
Long Delays 1353
Unclear Charges 1800
Delivery Errors 900
Shipping Errors 7300
Out of Stock 2700
Construct a Pareto Diagram below to show this data. What area(s) should the focus be on?